Shoe machinery



1 WEINSTAT SHOE MAC-HINERY June 6, 1933.

Filed Nov. '7, 1931 7 Sheets-Sheet 1 Inventor; We

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7 Sheets-Sheet 2 P. WEINSTAT SHOE MACHINERY Filed Nov. 7, 1931 June 6, 1933.

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SHOE MACHINERY Filed NW. 7, 1951 7 Sheets-Sheet 4 Att 8.

June 6, 1933. P. WEINSTAT 1,912,555

SHOE MACHINERY Filed Nov. 7, 1931 7 Sheets-Sheet 5 i'll ' P. WEINSTAT SHOE MACHINERY June 6, 1933.

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SHOE MACHINERY Filed Nov. 7, 1931 7 Sheets-Sheet 7 J P7721: ef'rtatg I Patented June 6, 1933 PATENT OFFICE] PHILIP WEINSTAT, OF LAJVRENGE, MASSACHUSETTS SHOE MACHINERY Application filed November 7, 1931. Serial No. 573,541.

This invention relates to an improvement in shoemachinery, and more particularly to a machine by which the portion of the upper secured to the inner sole is roughened and treated with cement in preparation for the application of the outer sole thereto.

In that manufacture of shoes in which the outer sole is secured by the use of cement or other adhesive to the upper, it is necessary that the portion of the upper which receives the cement be roughened, and heretofore these steps have been performed manually, roughing that part of the unfinished shoe as, for example. by holding and moving the unfinished shoe over an abrasive wheel and applying the cement in a strip or band with a brush or wiper. The part of the shoe to be roughened and cemented must not extend beyond a certain point or the appearance and quality of the shoe will be seriously impaired.

If the roughening operation should be extended to that portion of the upper which is not covered in the finished shoe by the outer sole, the value of the shoe, particularly if it be made with an upper of fine material, will be destroyed and if, on the other hand, the entire surface to receive the cement be not roughened, the outer sole will not be firmly secured and the strength and Wearing qualities of the shoe will be impaired. The same limitations exist with respect tothe cementing step.

:The primary object of this invention is to provide a machine by which the roughening and cement applying steps above mentioned are carried out automatically so that the shoes treated thereby are uniform in strength and wearing qualities and all danger of destroying or impairing the shoes is eliminated.

(Ether objects of the invention will appear from a consideration of the following description of one embodiment thereof and of the drawings which illustrate such embodiment and in which 7 Fig. 1 is a plan View of a machine embodying ("is form of this invention;

" 2 is a side elevation thereof;

Fig. 3 is an end elevation of the machine illustrating the mechanism by which the'shoes are supported and treated;

Fig. 4 is an enlarged side elevation of the shoe roughing mechanism;

Fig. 5 is an enlarged end elevation of such mechanism, shown partly in section;

Fig. 6 is an enlarged side elevation of one element of the shoe cementing mechanism;

Fig. 7 is an enlarged View and Fig. 8 a cross section taken along the line 88 of Fig. 1 of a detail of the actuating mechanism;

Fig. 9 is an enlarged elevation of control for the actuating mechanism; i

Fig. 10 is a plan view of one element of the control; and i i Fig. 11 is a crosssectional View of such element.

In the machine selected as one embodiment of the invent-ion the unfinished shoes are placed upon the lasts and 21, the former being for a right shoe and the latter being for a left shoe, and subjected to treatment by rotatable elements These elements, which may be roughing wheels or cement applying wheels, are carried by a frame movable over a stationary frame or standard 23 whereby the elements not only rotate but travel in a. predeterminedorbit so that they are moved'over certain desired portions of the shoes. As will be set forth hereinbelow, only one shoe can be treated at a time'and when the operation is concluded the parts automatically resume their normal inopera tive position.

The rotatable elements 22- shown in Figs. 2, 3, 4 and 5 comprise roughing wheels 25 fixed upon a shaft 26 and enclosed within casings 27. From the casings 2'? project pins 28 which reciprocate freelyin. sockets 29 carried by the frame- 30 which will be described later in detail. Surrounding the shaft .26 is a sleeve 31 fixed at the ends to the casings 27. A roller 32 supported on the sleeve 31 by antifriction bearings 33 rests upon an adjustable cam plate 34: which determines the heights of the elements relative to the shoes.

The plate 34 consists of a toe section 35 and a heel section 36 pivotally joined at the ball of the foot by a pin 37, each section being removably secured to a crossbar 33 on the main frame 23 by a bolt 39 passed through an arcuate slot 40. The free end of each section is provided with a notch 41 which receives a block 42 adapted to be raised and lowered in a pocket 43 of the bar 38 by a set screw 44. By loosening the bolt 39 and rotating the screw 44 either section may be raised or lowered to make the contour of the cam plateconform to the last on which the shoe is supported. In order to insure that the roller 32 contact at all times with the guiding edge of the cam plate a retaining plate 46 is provided. This plate is reciprocally supported in slotted uprights 47 fixed to the crossbar 38 and is held yieldably in cont-act with the roller by spring 48.

Each last 20 or 21 is mounted upon a rod 50 reciprocal in a sleeve 51, which sleeve similarly reciprocates in a socket 52 on a crossbar 53. A pivotally supported beam 55 has yoked ends which receive the rods 50, such ends being depressed by contact with the lower ends of the sleeve 51 and raised by the heads 56 on the rods 50. Connections 58 and 59 at the ends of a cable are attached to the beam 55 at opposite sides of the pivot 57. The sleeves 51 are guided in their reciprocation by parallel rods 60 connected at the upper ends by bars 61, which rods reciprocate in sockets 62 in the crossbar 53. Surrounding the upper end of the rod 50 which projects above the sleeve 51 is a spring 63. The lower end ofthe spring rests upon the sleeve and upon the upper end rests the heel of the last.

From one side of the bar 61 projects a tongue 65 adapted when the last is raised into the operative position to engage a latch 66 which is fixed upon a rock shaft 67 and. by which the last is held in such position. Projecting from the other side of the bar an arm 68 in which is adjustably secured a rest 69 which bears against the toe of the shoe on the last.

The sleeve 51 is raised by an arm 70 pivotally secured to a bracket 71 on the crossbar 53. An enlargement 72 intermediate the ends of the arm 70 has an opening which permits it-to be raised or lowered relative to the sleeve but it will be noted that the arm contacts with the bar 61 to raise the sleeve and contract the spring 63 until the tongue 65 e11- gages the latch 66. The arm 70 is shown in Fig. 2 in full lines in the raised position and in dotted lines in the normal lowered position. A modification of the mounting of the arm 70 is shown in Figs. 4 and 5 in which the arm is pivoted upon a yoke-shaped bracket 75, the ends of which are slidable upon rods 76 fixed in a plate 77. I

\Vhen cement is to be applied to the shoc the roughing wheels 25 and casings 27 are replaced by cementing wheels 80 (see Fig. 6) having casings 81 from which project pins 82 which reciprocate freely in the sockets 29. The cement is fed under pressure to each wheel 80 through a tube 83 which extends into the rear of the casing 81. The shaft 26 passes through and drives the wheels 80 in the same manner as it drives the wheels 25.

The movable frame 30 by which the rotating elements 22 are supported comprises apair of bars 100, 101 which extend longitudinally of the main frame. Rollers 102 at the ends of the bars 100, 101 travel upon tracks 103 secured to the main frame and the bars are fixed the proper distance apart by crossbars 104. Supported by the bar 100 and extending toward the bar 101 parallel to the bars 104 is a beam 105. On the beam 105 is supported a block 106 which carries the sockets 29 in which the pins 28 or 82 reciprocate. The block 106 is bifurcated at one end and the legs 107 in which the sockets 29 are formed extend at opposite sides of the beam 105 and are provided with tongues 108 which project into recesses 109 in each side of the beam. At the other end of the block 106 is mounted a post 110. As shown particularly in Figs. 3 and 7 the block 106 is so formed that it extends above and out of contact with the bar 101.

The movable frame 30 is reciprocated as a unit transversely of the main frame and the beam 105 is reciprocated longitudinally of the main frame so that the rotatable elements 22 follow a predetermined orbit about the shoes. The movement of the frame and beam is controlled by templates 115, 116, the latter of the templates not being shown, in the manner and by the means hereinafter described. The templates 115 and 116 (see Figs. 9. 10 and 11) are mounted on plates 117 and 118, respectively, supported by the main frame. and in each template is formed a continuous groove 120 having the outline of a shoe sole. The grooved faces of the templates are opposed and mounted between them is a pin 121 which, when raised, enters the groove 120 of the upper template 116 and when lowered enters the groove 120 of the lower template 115. The grooves 120 (see Fig. 10) follows the outline of the sole for ashoe of a predetermined size, number 4C being selected for convenience of description, the groove in the template 115 corresponding to a right shoe and the groove in the template 116 corresponding to a left shoe. lVith this exception the mountings of the templates correspond and hence only that of the template 115 has been shown and will be described in detail, it being understood that such showing and description also applies to the template 116.

Mounted to travel in a channel 122, surrounding and having the same general contour as the groove 120, is a chain 123 from which a series of flights 124 project across the groove. The chain is driven by a spur gear 125, in a pocket 126 of the plate 117, and fixed upon a. drive shaft 127 which, as shown in Fig. 2, extends through both plates 117 and 118. A cover 128 removably secured to the plate 117 protects the chain and gear and has a central opening which permits the free travel of the pin 121 in the groove 120. Projecting into the path of travel of the pin 121 is an arm pivotally secured to the plate 117. The arm 130 occupies a gap 131 in the cover and will be tripped by the pin 121 upon its arrival at that portion of the groove corresponding to the inner side of the heel. It will be apparent from a consideration of Fig. 9 that the engagement of the pin 121 by any flight 124 will cause the pin to be carried along the groove until it arrives at the heel where the channel 122 departs from the groove so that the pin in the position'shown in dotted lines in that figure is at rest until brought into engagement with a flight by suitable means as, for example, the handle 132 fixed on the block 106. Attention is also called to the fact that the arm 130 is tripped by the pin as it is about to move into the position of rest.

The pin 121 is supported for reciprocation in a boss 135 formed at one end of an arm 136 which extends into the space between the templates 115 and 116 and is attached at the other end to a bracket 137 secured to a block 150 which forms one element of the movable frame 30. A stud 140 projects from one side of the pin 121 through a slot 141 in the boss 135 and enters a notch 1 12 in a plate 143 pivotally mounted upon the arm 136. A cable 145, to the ends of which are secured the connections 58, 59. previously mentioned, is attached to the plate 143 and by it the vertical position of the pin 121 is controlled. In order to protect the cable against frictional wear flexible tubing 146 is provided through which the cable lengths travel from the plate 143 to the shoe treating end of the machine. \Vhile a single cable is shown in the drawings, two or more cables may of course be employed.

The block 150 (see Figs. 1, 2 and 9) is supported by and encloses the bar 100 and is provided with: antifriction bearings 151 to facilitate its travel longitudinally of the bar. Pivotally attached to the block 150 by a pin 152 is an arm 153 connected by links 151, 155 to a pivot 156 upon the main or stationary frame. The arm 153 is connected to the block 105 by a link 157. One end of the link is pivoted by a pin 158 to the block and the other end is attached to and movable along the arm 153. As shown in the drawings, the

outer edge of the arm is serrated and a spur gear 161, mounted within a strip 160 at the end of the link, meshes with the teeth 011 the arm 153'. The strip 160, as shown in Fig. 2, is bent around the inner and outer edges of the arm and on it is mounted a knob 162, which may be used as a handle to swing the link 157 on its pivot, and a finger 163 which is movable over a scale 16 1 on the arm 153 to indicate the position of the link 157 relative to the pin 152. Pivotally mounted upon a post 165 on the block 105 by a pin 166 is an arm 167 similar in construction to the arm 153'. The arm 167 is connected by a link 168 to the post 110 on the block 106. One end of the link 168 is pivotally attached to the post 110 by a pin 169 while the other end engages the arm 167 by means of a spur gear 170 which meshes with the teeth on the serrated outer edge and is carried by a strip 171. A knob 172 is provided as a handle and a finger 173 is movable over a scale on the arm to indicate the position of the link 168.. The arm 167 is connected by a link 175 to a block 176 supported by tapered rollers 177 from a beam 178'suspended from an overhanging am 180 attached at its base to the stationary main frame.

A motor or other suitable source of power is provided to drive the rotatable elements 22v through the shaft 26 and also through a shaft 191' and suitable intermediate gearing 192 to drive the shaft 127. The arm 130 which is tripped by the pin 121 is connected to an arm 195 on the shaft 67 carrying the latches 66 by links'196 and 197. A spring 198 normally holds the latches 66 and the arm in the operative positions.

While the operation of the machine is believed to be obvious in view of the showing in the drawings and the above description of the various elements and their functions, it will, however, be set forth briefly. Assuming that an unfinished right shoe to be treated has been placed upon the last 20 (see Fig. 3) the last is raised by the arm 70 into contact with the rotatable element 22, which may be the roughing wheel 25 or the cement applying wheel 80. This movement acts-through the connections 58 and 59 of the cable 145 to lower the pin 121 into the groove 120 of the template 115. The frame 30- is now shifted by the handle 132 to move the pin 121 into the path of travel of the flights 124 and the motor 190 set into operation to rotate the elements 22 and cause the chain 123 to move. the pin 121 along the groove 120. This movementof the pin is transmitted to the block 150 and thence through the block 106 to the elements, causing them to follow a path duplicating the groove 120.- The impulse is transmitted from the block 150 to the block 106 through the arm 153, link 157, beam 105, arm 167, and link 168. As the pin 121 completes its travel it trips the arm 130 and through the links 197, 196and arm 195 moves the latch 66 away from the tongue 65, releasing the sleeve 51 and allowing the last 20 to be depressedT It will be understood that while the right shoe on the last 20 is being treated a left shoe is placed on the last 21 so that last may now be raised by the arm 70 and through the cable 145 the pin 121 elevated into the groove 120 of the template 116 so that by. shifting the frame 30 laterally the operation above described is repeated.

The templates and 116 are, as pointed out above, of standard dimensions and it according] y is necessary to adjust the actuating transmittedthereto through the link 168. If

the link 157. were moved over the arm 153 so that its outer end coincided with the pin 152 and the link 168 moved'over the arm 167 to a point-over the pin 166, it must follow that the movement of-the block 106 would correspond to the movement of the pin 121; However, by shifting the. links out of such positions as, for example, into the positions shown in F 1, the movement of the block 106' is changed. The link 157, when the block 150 is moved over the bar 100, would move the beam 105 a shorter distance, and as a result the block 106 would not travel as farlongitudinally as the pin'121; The "link 168, on the other hand, would move the block 106 a greater distance laterally than the block 150. These differences flow from the'pivotal movement of the 2111115153 and 167 about the pins 152and 166, as will readily be-appreciated;

Itwill be noted thatafter the treating o1 eration upon a shoe has been initiated, the last carrying such shoecan not be lowered until the operation is completed, but that as soon as it has been completed the travel of the block 106 stops and the last'is released so that the other last 'canbe raised and the first last consequently lowered. It will'be further noted that the machine cairbe quickly and easily adjusted so that the'roughing or cementing of the shoe will be restricted to the proper limits for the size of the shoe treated and'hence all danger of damaging the shoe by too much or too little roughing or cementing'r iseliminatcd; I i i v lVh'ile one embodiment ofthe invention has been show-nand described, I am not limited thereto, since other embodiments by which shoes maybe roughed and the cement applied thereto over theproper areas may bemade without depart ng from the spiritand scope of the invention as set forth in the following claims.

" Iclaim I 1. In a machine for treating the bottoms of unfinished shoes preparatory to the securing of outer solesthereto, a pair of lasts on which said shoes are supported, rotatable tools for so treating the bottoms of the shoes, means for moving one of said lasts to br ng th'e'bottom of the shoe thereoninto contact with one of said tools, means for holding the last 111 such position and preventing the-moving of the other last.- mea ns for causing said tool to 0110 a predetermined path over the bottom of the shoe, and mechanism actuatedby said causing means to render said holding means inoperative. e

2. In a machine for treating the bottoms of unfinished shoes preparatory to the securing of outer soles thereto, a pair of lasts on which said shoes are supported, rotatable tools for so treating the bottoms of the shoes, means for moving one'oi said lasts to bring the bottom of the shoe thereon into contact with one of said tools, means for holding the lastm such position and preventing the moving of the other last, means for causing said tool to-follow apredetermined path over the bottom of the shoe, means for rotatmgtsaid tool and operating said causing means, and

mechanism actuated by said causing means to I render said-holdingmeans inoperative 3. In amachine for treatingthe bottoms of unfinished shoes preparatory to the securing of outer soles thereto, a pair of lasts on which said shoes are supported,rotatable tools for. so treating the bottoms ofthe shoes, means for-moving one ofsaid lasts-to bring the bottom of the shoe thereon into contact with one of said tools, imcans tor holding the last in such position and preventingthe movin otthe other last, meansfor causun 2') P.

said tool to tollow apredetern'iined pat-hover the bottom of. the shoe, means-for rotating said tool and operating said causing means, means for maintainingv the tool in contact with the bottom of theshoc, and mechanism actuated by said causing means upon its aririval at the conclusion of said path to render said holdingnieans inoperative.

ll In a machine for treating the'bottoms ot unfinished shoes preparatory to the securing of outer soles thereto, a pair of lasts on which said shoes are supported. rotatable tools-for so treating the bottoms of the shoes, means for moving one of said lasts to bring the bottom of the shoe thereon into-contact with one of said tools, means-forholding the last in such position and preventing the moving of the otherlast, means for causing said'tool to follow a predetermined path over the bottom otthe shoe, said las'tnamedi means-including' a pin, means for moving said spin, a template guiding said pin in a predetermined path, a block on'which said rotatable tools are supported, means for transmitting the moveone of said tools, and means for causing the tool in contact with the shoe to follow a. predetermined path over the bottom of the shoe, the tools being moved in one path when one of the tools is in contact with a shoe and in another path when the other tool is in contact with the other shoe.

6. In a machine for treating the bottoms of unfinished shoes preparatory to the securing of outer soles thereto, two lasts on which said shoes are supported, two rotatable tools for so treating the bottoms of the shoes, means for moving one of said lasts to bring the bottom of the shoe thereon into contact with one of said tools, means for causing the tool in contact with the shoe to follow a predetermined path over the bottom of the shoe, said last-named means including two templates, a pin actuated by said last moving means and brought into contact with one of said templates when one last is moved and into contact with the other of said templates when the other last is moved, and connections between said pin and said tools whereby when the last supported shoe is in contact with one tool that tool will travel in a different path than will the other tool when it is in contact with the other last supported shoe.

7. In a machine for treating the bottoms of unfinished shoes preparatory to the securing of outer soles thereto, two lasts on which said shoes are supported, two rotatable tools for so treating the bottoms of the shoes, means for moving one of said lasts to bring the bot-v tom of the shoe thereon into contact with one of said tools, means for causing the tool in contact with the shoe to follow a predetermined path over the bottom of the shoe, said last-named means including two templates, a pin actuated by said last-moving means and brought into contact with one of said templates when one last is moved and into con tact with the other of said templates when the other last is moved, means for causing said pin to travel in a path defined by the template with which it is in contact, and connections between said pin and said tools whereby when the last-supported shoe is in contact with one tool that tool will travel in a difierent path than will the other tool when it is in contact with the other last supported shoe.

8. In a machine for treating the bottoms of unfinished shoes preparatory to the securing of outer soles thereto, a last on which said shoes are supported, a rotatable tool for so treating the bottoms of the shoes, and means for causing the tool to follow a predetermined path over the bottom of the shoe, said means including a template of standard dimensions for one size of the style of the shoes to be treated, an element movable by the causing means in contact with said template and guided thereby, and connections between said element and said tool whereby the tool will to the size of the particular shoe being treated.

Signed by me at Methuen, Mass, this 31st day of Oct. 31,1931.

PHILIP WEINSTAT. 

